402045525 has 120 divisors (see below), whose sum is σ = 862069824. Its totient is φ = 181440000.

The previous prime is 402045521. The next prime is 402045533. The reversal of 402045525 is 525540204.

It is not a de Polignac number, because 402045525 - 2² = 402045521 is a prime.

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 (402045521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 119 ways as a sum of consecutive naturals, for example, 1601650 + ... + 1601900.

Almost surely, 2^402045525 is an apocalyptic number.

402045525 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

402045525 is an abundant number, since it is smaller than the sum of its proper divisors (460024299).

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

402045525 is a wasteful number, since it uses less digits than its factorization.

402045525 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 379 counting only the distinct ones).

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

The square root of 402045525 is about 20051.0729139366. The cubic root of 402045525 is about 738.0601279584.

Adding to 402045525 its reverse (525540204), we get a palindrome (927585729).

The spelling of 402045525 in words is "four hundred two million, forty-five thousand, five hundred twenty-five".