25040142631 has 12 divisors (see below), whose sum is σ = 29276200008. Its totient is φ = 21354022032.

The previous prime is 25040142587. The next prime is 25040142661. The reversal of 25040142631 is 13624104052.

It is not a de Polignac number, because 25040142631 - 2¹³ = 25040134439 is a prime.

It is a super-2 number, since 2×25040142631² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 25040142631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25040142661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1287361 + ... + 1306666.

It is an arithmetic number, because the mean of its divisors is an integer number (2439683334).

Almost surely, 2^25040142631 is an apocalyptic number.

25040142631 is a deficient number, since it is larger than the sum of its proper divisors (4236057377).

25040142631 is a wasteful number, since it uses less digits than its factorization.

25040142631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2594238 (or 2594231 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

Adding to 25040142631 its reverse (13624104052), we get a palindrome (38664246683).

The spelling of 25040142631 in words is "twenty-five billion, forty million, one hundred forty-two thousand, six hundred thirty-one".