25715134 has 4 divisors (see below), whose sum is σ = 38572704. Its totient is φ = 12857566.

The previous prime is 25715119. The next prime is 25715147. The reversal of 25715134 is 43151752.

It is a happy number.

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

It is a super-2 number, since 2×25715134² = 1322536233275912, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6428782 + ... + 6428785.

It is an arithmetic number, because the mean of its divisors is an integer number (9643176).

Almost surely, 2^25715134 is an apocalyptic number.

25715134 is a deficient number, since it is larger than the sum of its proper divisors (12857570).

25715134 is a wasteful number, since it uses less digits than its factorization.

25715134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12857569.

The product of its digits is 4200, while the sum is 28.

The square root of 25715134 is about 5071.0091697807. The cubic root of 25715134 is about 295.1636896779.

Adding to 25715134 its reverse (43151752), we get a palindrome (68866886).

The spelling of 25715134 in words is "twenty-five million, seven hundred fifteen thousand, one hundred thirty-four".