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25050552553 = 132970194789
BaseRepresentation
bin10111010101001000…
…010001100011101001
32101122211000220212201
4113111020101203221
5402300420140203
615301424140201
71544530116625
oct272510214351
971584026781
1025050552553
11a6954249a4
124a31467661
132492b56280
1412d8d86185
159b935ae1d
hex5d52118e9

25050552553 has 16 divisors (see below), whose sum is σ = 27947883600. Its totient is φ = 22294137600.

The previous prime is 25050552529. The next prime is 25050552601. The reversal of 25050552553 is 35525505052.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 1853130304 + 23197422249 = 43048^2 + 152307^2 .

It is a cyclic number.

It is not a de Polignac number, because 25050552553 - 225 = 25016998121 is a prime.

It is a super-3 number, since 3×250505525533 (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (25050552503) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216883 + ... + 311671.

It is an arithmetic number, because the mean of its divisors is an integer number (1746742725).

Almost surely, 225050552553 is an apocalyptic number.

It is an amenable number.

25050552553 is a deficient number, since it is larger than the sum of its proper divisors (2897331047).

25050552553 is a wasteful number, since it uses less digits than its factorization.

25050552553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95532.

The product of its (nonzero) digits is 187500, while the sum is 37.

The spelling of 25050552553 in words is "twenty-five billion, fifty million, five hundred fifty-two thousand, five hundred fifty-three".

Divisors: 1 13 29 377 701 9113 20329 94789 264277 1232257 2748881 35735453 66447089 863812157 1926965581 25050552553