25049224 has 8 divisors (see below), whose sum is σ = 46967310. Its totient is φ = 12524608.

The previous prime is 25049221. The next prime is 25049281. The reversal of 25049224 is 42294052.

25049224 = T₄₀₈₅ + T₄₀₈₆ + T₄₀₈₇.

It can be written as a sum of positive squares in only one way, i.e., 13557124 + 11492100 = 3682^2 + 3390^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 25049192 and 25049201.

It is not an unprimeable number, because it can be changed into a prime (25049221) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1565569 + ... + 1565584.

Almost surely, 2^25049224 is an apocalyptic number.

25049224 is the 4087-th centered triangular number.

It is an amenable number.

25049224 is a deficient number, since it is larger than the sum of its proper divisors (21918086).

25049224 is a wasteful number, since it uses less digits than its factorization.

25049224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3131159 (or 3131155 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 25049224 is about 5004.9199793803. The cubic root of 25049224 is about 292.5935571373.

The spelling of 25049224 in words is "twenty-five million, forty-nine thousand, two hundred twenty-four".