402525040 has 20 divisors (see below), whose sum is σ = 935870904. Its totient is φ = 161009984.

The previous prime is 402525029. The next prime is 402525091. The reversal of 402525040 is 40525204.

It is a tau number, because it is divible by the number of its divisors (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2515702 + ... + 2515861.

Almost surely, 2^402525040 is an apocalyptic number.

402525040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

402525040 is an abundant number, since it is smaller than the sum of its proper divisors (533345864).

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

402525040 is a wasteful number, since it uses less digits than its factorization.

402525040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5031576 (or 5031570 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 402525040 is about 20063.0266909058. The cubic root of 402525040 is about 738.3534366110.

The spelling of 402525040 in words is "four hundred two million, five hundred twenty-five thousand, forty".