25769442 has 16 divisors (see below), whose sum is σ = 52636032. Its totient is φ = 8406960.

The previous prime is 25769437. The next prime is 25769449. The reversal of 25769442 is 24496752.

It is a self number, because there is not a number n which added to its sum of digits gives 25769442.

It is not an unprimeable number, because it can be changed into a prime (25769449) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45409 + ... + 45972.

It is an arithmetic number, because the mean of its divisors is an integer number (3289752).

Almost surely, 2^25769442 is an apocalyptic number.

25769442 is an abundant number, since it is smaller than the sum of its proper divisors (26866590).

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

25769442 is a wasteful number, since it uses less digits than its factorization.

25769442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91433.

The product of its digits is 120960, while the sum is 39.

The square root of 25769442 is about 5076.3610982671. The cubic root of 25769442 is about 295.3713297706.

The spelling of 25769442 in words is "twenty-five million, seven hundred sixty-nine thousand, four hundred forty-two".