25231500406 has 16 divisors (see below), whose sum is σ = 43426333440. Its totient is φ = 10770417000.

The previous prime is 25231500389. The next prime is 25231500407. The reversal of 25231500406 is 60400513252.

It is a super-2 number, since 2×25231500406² (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 (25231500407) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3586626 + ... + 3593653.

It is an arithmetic number, because the mean of its divisors is an integer number (2714145840).

Almost surely, 2^25231500406 is an apocalyptic number.

25231500406 is a deficient number, since it is larger than the sum of its proper divisors (18194833034).

25231500406 is a wasteful number, since it uses less digits than its factorization.

25231500406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7180539.

The product of its (nonzero) digits is 7200, while the sum is 28.

The spelling of 25231500406 in words is "twenty-five billion, two hundred thirty-one million, five hundred thousand, four hundred six".