25001596820442 has 16 divisors (see below), whose sum is σ = 54548938517472. Its totient is φ = 7576241460720.

The previous prime is 25001596820429. The next prime is 25001596820477. The reversal of 25001596820442 is 24402869510052.

It is a junction number, because it is equal to n+sod(n) for n = 25001596820391 and 25001596820400.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189406036453 + ... + 189406036584.

It is an arithmetic number, because the mean of its divisors is an integer number (3409308657342).

Almost surely, 2^{25001596820442} is an apocalyptic number.

25001596820442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

25001596820442 is an abundant number, since it is smaller than the sum of its proper divisors (29547341697030).

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

25001596820442 is a wasteful number, since it uses less digits than its factorization.

25001596820442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378812073053.

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 25001596820442 in words is "twenty-five trillion, one billion, five hundred ninety-six million, eight hundred twenty thousand, four hundred forty-two".