1023553425 has 24 divisors (see below), whose sum is σ = 1791822816. Its totient is φ = 513783040.

The previous prime is 1023553423. The next prime is 1023553469. The reversal of 1023553425 is 5243553201.

It is not a de Polignac number, because 1023553425 - 2¹ = 1023553423 is a prime.

It is a super-2 number, since 2×1023553425² = 2095323227658461250, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1023553392 and 1023553401.

It is not an unprimeable number, because it can be changed into a prime (1023553423) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 400119 + ... + 402668.

It is an arithmetic number, because the mean of its divisors is an integer number (74659284).

Almost surely, 2^1023553425 is an apocalyptic number.

1023553425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1023553425 is a deficient number, since it is larger than the sum of its proper divisors (768269391).

1023553425 is a wasteful number, since it uses less digits than its factorization.

1023553425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 802817 (or 802812 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 30.

The square root of 1023553425 is about 31993.0215046969. The cubic root of 1023553425 is about 1007.7902953704.

The spelling of 1023553425 in words is "one billion, twenty-three million, five hundred fifty-three thousand, four hundred twenty-five".