25111213040 has 20 divisors (see below), whose sum is σ = 58383570504. Its totient is φ = 10044485184.

The previous prime is 25111213037. The next prime is 25111213087. The reversal of 25111213040 is 4031211152.

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 156945002 + ... + 156945161.

Almost surely, 2^25111213040 is an apocalyptic number.

25111213040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

25111213040 is an abundant number, since it is smaller than the sum of its proper divisors (33272357464).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25111213040 is a wasteful number, since it uses less digits than its factorization.

25111213040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 313890176 (or 313890170 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 20.

Adding to 25111213040 its reverse (4031211152), we get a palindrome (29142424192).

The spelling of 25111213040 in words is "twenty-five billion, one hundred eleven million, two hundred thirteen thousand, forty".