25742902 has 4 divisors (see below), whose sum is σ = 38614356. Its totient is φ = 12871450.

The previous prime is 25742881. The next prime is 25742903. The reversal of 25742902 is 20924752.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25742903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6435724 + ... + 6435727.

It is an arithmetic number, because the mean of its divisors is an integer number (9653589).

Almost surely, 2^25742902 is an apocalyptic number.

25742902 is a deficient number, since it is larger than the sum of its proper divisors (12871454).

25742902 is a wasteful number, since it uses less digits than its factorization.

25742902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12871453.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 25742902 is about 5073.7463476213. The cubic root of 25742902 is about 295.2698937646.

It can be divided in two parts, 2574 and 2902, that added together give a square (5476 = 74²).

The spelling of 25742902 in words is "twenty-five million, seven hundred forty-two thousand, nine hundred two".