25502742 has 16 divisors (see below), whose sum is σ = 56672880. Its totient is φ = 8500896.

The previous prime is 25502713. The next prime is 25502749. The reversal of 25502742 is 24720552.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25502749) 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, 236083 + ... + 236190.

It is an arithmetic number, because the mean of its divisors is an integer number (3542055).

Almost surely, 2^25502742 is an apocalyptic number.

25502742 is an abundant number, since it is smaller than the sum of its proper divisors (31170138).

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

25502742 is a wasteful number, since it uses less digits than its factorization.

25502742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472284 (or 472278 counting only the distinct ones).

The product of its (nonzero) digits is 5600, while the sum is 27.

The square root of 25502742 is about 5050.0239603392. The cubic root of 25502742 is about 294.3488154729.

It can be divided in two parts, 25502 and 742, that added together give a square (26244 = 162²).

The spelling of 25502742 in words is "twenty-five million, five hundred two thousand, seven hundred forty-two".