25134020442 has 32 divisors (see below), whose sum is σ = 56769015360. Its totient is φ = 8240661360.

The previous prime is 25134020437. The next prime is 25134020459. The reversal of 25134020442 is 24402043152.

25134020442 is a `hidden beast` number, since 251 + 3 + 402 + 0 + 4 + 4 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

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, 3811828 + ... + 3818415.

It is an arithmetic number, because the mean of its divisors is an integer number (1774031730).

Almost surely, 2^25134020442 is an apocalyptic number.

25134020442 is an abundant number, since it is smaller than the sum of its proper divisors (31634994918).

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

25134020442 is a wasteful number, since it uses less digits than its factorization.

25134020442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7630315 (or 7630309 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

Adding to 25134020442 its reverse (24402043152), we get a palindrome (49536063594).

The spelling of 25134020442 in words is "twenty-five billion, one hundred thirty-four million, twenty thousand, four hundred forty-two".