25231500403 has 4 divisors (see below), whose sum is σ = 25386295048. Its totient is φ = 25076705760.

The previous prime is 25231500389. The next prime is 25231500407. The reversal of 25231500403 is 30400513252.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-25231500403 is a prime.

It is a super-2 number, since 2×25231500403² (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 (25231500407) 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, 77397078 + ... + 77397403.

It is an arithmetic number, because the mean of its divisors is an integer number (6346573762).

Almost surely, 2^25231500403 is an apocalyptic number.

25231500403 is a deficient number, since it is larger than the sum of its proper divisors (154794645).

25231500403 is a wasteful number, since it uses less digits than its factorization.

25231500403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154794644.

The product of its (nonzero) digits is 3600, while the sum is 25.

The spelling of 25231500403 in words is "twenty-five billion, two hundred thirty-one million, five hundred thousand, four hundred three".