25927138 has 4 divisors (see below), whose sum is σ = 38890710. Its totient is φ = 12963568.

The previous prime is 25927133. The next prime is 25927147. The reversal of 25927138 is 83172952.

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

It can be written as a sum of positive squares in only one way, i.e., 20277009 + 5650129 = 4503^2 + 2377^2 .

It is a junction number, because it is equal to n+sod(n) for n = 25927097 and 25927106.

It is not an unprimeable number, because it can be changed into a prime (25927133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6481783 + ... + 6481786.

Almost surely, 2^25927138 is an apocalyptic number.

25927138 is a deficient number, since it is larger than the sum of its proper divisors (12963572).

25927138 is a wasteful number, since it uses less digits than its factorization.

25927138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12963571.

The product of its digits is 30240, while the sum is 37.

The square root of 25927138 is about 5091.8697940933. The cubic root of 25927138 is about 295.9726128179.

It can be divided in two parts, 2592 and 7138, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 25927138 in words is "twenty-five million, nine hundred twenty-seven thousand, one hundred thirty-eight".