25320940173 has 16 divisors (see below), whose sum is σ = 39719122560. Its totient is φ = 15887648448.

The previous prime is 25320940147. The next prime is 25320940199. The reversal of 25320940173 is 37104902352.

It is an interprime number because it is at equal distance from previous prime (25320940147) and next prime (25320940199).

It is not a de Polignac number, because 25320940173 - 2⁶ = 25320940109 is a prime.

It is a super-2 number, since 2×25320940173² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25320940103) 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, 27582265 + ... + 27583182.

It is an arithmetic number, because the mean of its divisors is an integer number (2482445160).

Almost surely, 2^25320940173 is an apocalyptic number.

It is an amenable number.

25320940173 is a deficient number, since it is larger than the sum of its proper divisors (14398182387).

25320940173 is a wasteful number, since it uses less digits than its factorization.

25320940173 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55165473 (or 55165467 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 36.

The spelling of 25320940173 in words is "twenty-five billion, three hundred twenty million, nine hundred forty thousand, one hundred seventy-three".