25515054 has 32 divisors (see below), whose sum is σ = 57348000. Its totient is φ = 8407872.

The previous prime is 25515053. The next prime is 25515059. The reversal of 25515054 is 45051552.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25515053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2152 + ... + 7460.

It is an arithmetic number, because the mean of its divisors is an integer number (1792125).

Almost surely, 2^25515054 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25515054, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28674000).

25515054 is an abundant number, since it is smaller than the sum of its proper divisors (31832946).

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

25515054 is a wasteful number, since it uses less digits than its factorization.

25515054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5409 (or 5403 counting only the distinct ones).

The product of its (nonzero) digits is 5000, while the sum is 27.

The square root of 25515054 is about 5051.2428173668. The cubic root of 25515054 is about 294.3961756036.

The spelling of 25515054 in words is "twenty-five million, five hundred fifteen thousand, fifty-four".