25949274 has 48 divisors (see below), whose sum is σ = 56902752. Its totient is φ = 7884864.

The previous prime is 25949251. The next prime is 25949281. The reversal of 25949274 is 47294952.

It is a super-2 number, since 2×25949274² = 1346729642254152, 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 23 ways as a sum of consecutive naturals, for example, 159117 + ... + 159279.

It is an arithmetic number, because the mean of its divisors is an integer number (1185474).

Almost surely, 2^25949274 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25949274, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28451376).

25949274 is an abundant number, since it is smaller than the sum of its proper divisors (30953478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

25949274 is a wasteful number, since it uses less digits than its factorization.

25949274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 351 (or 338 counting only the distinct ones).

The product of its digits is 181440, while the sum is 42.

The square root of 25949274 is about 5094.0429915736. The cubic root of 25949274 is about 296.0568204166.

The spelling of 25949274 in words is "twenty-five million, nine hundred forty-nine thousand, two hundred seventy-four".