25040522531 has 4 divisors (see below), whose sum is σ = 25042039464. Its totient is φ = 25039005600.

The previous prime is 25040522513. The next prime is 25040522543. The reversal of 25040522531 is 13522504052.

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 25040522531 - 2⁶ = 25040522467 is a prime.

It is a super-2 number, since 2×25040522531² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 25040522494 and 25040522503.

It is not an unprimeable number, because it can be changed into a prime (25040522131) 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, 733430 + ... + 766811.

It is an arithmetic number, because the mean of its divisors is an integer number (6260509866).

Almost surely, 2^25040522531 is an apocalyptic number.

25040522531 is a deficient number, since it is larger than the sum of its proper divisors (1516933).

25040522531 is a wasteful number, since it uses less digits than its factorization.

25040522531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1516932.

The product of its (nonzero) digits is 12000, while the sum is 29.

The spelling of 25040522531 in words is "twenty-five billion, forty million, five hundred twenty-two thousand, five hundred thirty-one".