25553003531 has 4 divisors (see below), whose sum is σ = 27876003864. Its totient is φ = 23230003200.

The previous prime is 25553003513. The next prime is 25553003543. The reversal of 25553003531 is 13530035552.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 25553003531 - 2³⁴ = 8373134347 is a prime.

It is a super-2 number, since 2×25553003531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (25553003551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1161500150 + ... + 1161500171.

It is an arithmetic number, because the mean of its divisors is an integer number (6969000966).

Almost surely, 2^25553003531 is an apocalyptic number.

25553003531 is a deficient number, since it is larger than the sum of its proper divisors (2323000333).

25553003531 is a wasteful number, since it uses less digits than its factorization.

25553003531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2323000332.

The product of its (nonzero) digits is 33750, while the sum is 32.

The spelling of 25553003531 in words is "twenty-five billion, five hundred fifty-three million, three thousand, five hundred thirty-one".