402025415 has 16 divisors (see below), whose sum is σ = 526901760. Its totient is φ = 292041120.

The previous prime is 402025397. The next prime is 402025417. The reversal of 402025415 is 514520204.

It is a happy number.

It is not a de Polignac number, because 402025415 - 2⁸ = 402025159 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402025417) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49406 + ... + 56964.

It is an arithmetic number, because the mean of its divisors is an integer number (32931360).

Almost surely, 2^402025415 is an apocalyptic number.

402025415 is a deficient number, since it is larger than the sum of its proper divisors (124876345).

402025415 is a wasteful number, since it uses less digits than its factorization.

402025415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8542.

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 402025415 is about 20050.5714382409. The cubic root of 402025415 is about 738.0478220248.

Adding to 402025415 its reverse (514520204), we get a palindrome (916545619).

The spelling of 402025415 in words is "four hundred two million, twenty-five thousand, four hundred fifteen".