25428574 has 8 divisors (see below), whose sum is σ = 40150440. Its totient is φ = 12045096.

The previous prime is 25428553. The next prime is 25428581. The reversal of 25428574 is 47582452.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×25428574² = 1293224751346952, 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 in 3 ways as a sum of consecutive naturals, for example, 334549 + ... + 334624.

It is an arithmetic number, because the mean of its divisors is an integer number (5018805).

Almost surely, 2^25428574 is an apocalyptic number.

25428574 is a deficient number, since it is larger than the sum of its proper divisors (14721866).

25428574 is a wasteful number, since it uses less digits than its factorization.

25428574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669194.

The product of its digits is 89600, while the sum is 37.

The square root of 25428574 is about 5042.6752820304. The cubic root of 25428574 is about 294.0631931047.

The spelling of 25428574 in words is "twenty-five million, four hundred twenty-eight thousand, five hundred seventy-four".