25215340044 has 48 divisors (see below), whose sum is σ = 59050252800. Its totient is φ = 8374519296.

The previous prime is 25215339911. The next prime is 25215340063. The reversal of 25215340044 is 44004351252.

It is a junction number, because it is equal to n+sod(n) for n = 25215339993 and 25215340020.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7955292 + ... + 7958460.

It is an arithmetic number, because the mean of its divisors is an integer number (1230213600).

Almost surely, 2^25215340044 is an apocalyptic number.

It is an amenable number.

25215340044 is an abundant number, since it is smaller than the sum of its proper divisors (33834912756).

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

25215340044 is a wasteful number, since it uses less digits than its factorization.

25215340044 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5382 (or 5380 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 30.

Adding to 25215340044 its reverse (44004351252), we get a palindrome (69219691296).

The spelling of 25215340044 in words is "twenty-five billion, two hundred fifteen million, three hundred forty thousand, forty-four".