2505402 has 24 divisors (see below), whose sum is σ = 5465460. Its totient is φ = 829440.

The previous prime is 2505401. The next prime is 2505407. The reversal of 2505402 is 2045052.

It can be written as a sum of positive squares in 2 ways, for example, as 2134521 + 370881 = 1461^2 + 609^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2505401) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2874 + ... + 3642.

2^2505402 is an apocalyptic number.

2505402 is an abundant number, since it is smaller than the sum of its proper divisors (2960058).

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

2505402 is a wasteful number, since it uses less digits than its factorization.

2505402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 958 (or 955 counting only the distinct ones).

The product of its (nonzero) digits is 400, while the sum is 18.

The square root of 2505402 is about 1582.8461706685. The cubic root of 2505402 is about 135.8185657307.

The spelling of 2505402 in words is "two million, five hundred five thousand, four hundred two".