69400725 has 24 divisors (see below), whose sum is σ = 116367552. Its totient is φ = 36489600.

The previous prime is 69400693. The next prime is 69400733. The reversal of 69400725 is 52700496.

It is not a de Polignac number, because 69400725 - 2⁵ = 69400693 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1192 + ... + 11841.

It is an arithmetic number, because the mean of its divisors is an integer number (4848648).

Almost surely, 2^69400725 is an apocalyptic number.

It is an amenable number.

69400725 is a deficient number, since it is larger than the sum of its proper divisors (46966827).

69400725 is a wasteful number, since it uses less digits than its factorization.

69400725 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13117 (or 13112 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 69400725 is about 8330.7097536765. The cubic root of 69400725 is about 410.9490704766.

Adding to 69400725 its reverse (52700496), we get a palindrome (122101221).

It can be divided in two parts, 69400 and 725, that added together give a triangular number (70125 = T₃₇₄).

The spelling of 69400725 in words is "sixty-nine million, four hundred thousand, seven hundred twenty-five".