25455402 has 120 divisors (see below), whose sum is σ = 69912960. Its totient is φ = 6667920.

The previous prime is 25455401. The next prime is 25455403. The reversal of 25455402 is 20455452.

25455402 is a `hidden beast` number, since 254 + 5 + 5 + 402 = 666.

It is an interprime number because it is at equal distance from previous prime (25455401) and next prime (25455403).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (25455401) 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 59 ways as a sum of consecutive naturals, for example, 821127 + ... + 821157.

It is an arithmetic number, because the mean of its divisors is an integer number (582608).

Almost surely, 2^25455402 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 25455402, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34956480).

25455402 is an abundant number, since it is smaller than the sum of its proper divisors (44457558).

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

25455402 is a wasteful number, since it uses less digits than its factorization.

25455402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 62 counting only the distinct ones).

The product of its (nonzero) digits is 8000, while the sum is 27.

The square root of 25455402 is about 5045.3346767088. The cubic root of 25455402 is about 294.1665722736.

The spelling of 25455402 in words is "twenty-five million, four hundred fifty-five thousand, four hundred two".