25012749 has 8 divisors (see below), whose sum is σ = 33386272. Its totient is φ = 16657200.

The previous prime is 25012739. The next prime is 25012781. The reversal of 25012749 is 94721052.

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

It is not a de Polignac number, because 25012749 - 2⁴ = 25012733 is a prime.

It is a super-2 number, since 2×25012749² = 1251275225074002, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25012709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 814 + ... + 7119.

It is an arithmetic number, because the mean of its divisors is an integer number (4173284).

Almost surely, 2^25012749 is an apocalyptic number.

It is an amenable number.

25012749 is a deficient number, since it is larger than the sum of its proper divisors (8373523).

25012749 is a wasteful number, since it uses less digits than its factorization.

25012749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8987.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 25012749 is about 5001.2747375044. The cubic root of 25012749 is about 292.4514697775.

The spelling of 25012749 in words is "twenty-five million, twelve thousand, seven hundred forty-nine".