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31032420025625 = 5449651872041
BaseRepresentation
bin1110000111001010011000…
…10111110100010100011001
311001212200002201010010101222
413003211030113310110121
513031413344011310000
6150000032535221425
76352006203664334
oct703451427642431
9131780081103358
1031032420025625
119984859100057
12359235a817875
13144146327a7b5
14793d973d161b
1538c357848a85
hex1c394c5f4519

31032420025625 has 10 divisors (see below), whose sum is σ = 38778112064802. Its totient is φ = 24825936020000.

The previous prime is 31032420025613. The next prime is 31032420025627. The reversal of 31032420025625 is 52652002423013.

It can be written as a sum of positive squares in 5 ways, for example, as 18352176195136 + 12680243830489 = 4283944^2 + 3560933^2 .

It is not a de Polignac number, because 31032420025625 - 24 = 31032420025609 is a prime.

It is a super-2 number, since 2×310324200256252 (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31032420025627) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 24825935396 + ... + 24825936645.

Almost surely, 231032420025625 is an apocalyptic number.

It is an amenable number.

31032420025625 is a deficient number, since it is larger than the sum of its proper divisors (7745692039177).

31032420025625 is an frugal number, since it uses more digits than its factorization.

31032420025625 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49651872061 (or 49651872046 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 35.

Adding to 31032420025625 its reverse (52652002423013), we get a palindrome (83684422448638).

The spelling of 31032420025625 in words is "thirty-one trillion, thirty-two billion, four hundred twenty million, twenty-five thousand, six hundred twenty-five".

Divisors: 1 5 25 125 625 49651872041 248259360205 1241296801025 6206484005125 31032420025625