402025550 has 24 divisors (see below), whose sum is σ = 773555400. Its totient is φ = 155264480.

The previous prime is 402025543. The next prime is 402025553. The reversal of 402025550 is 55520204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402025553) 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, 137180 + ... + 140079.

It is an arithmetic number, because the mean of its divisors is an integer number (32231475).

Almost surely, 2^402025550 is an apocalyptic number.

402025550 is a deficient number, since it is larger than the sum of its proper divisors (371529850).

402025550 is a wasteful number, since it uses less digits than its factorization.

402025550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 277300 (or 277295 counting only the distinct ones).

The product of its (nonzero) digits is 2000, while the sum is 23.

The square root of 402025550 is about 20050.5748047282. The cubic root of 402025550 is about 738.0479046368.

Adding to 402025550 its reverse (55520204), we get a palindrome (457545754).

The spelling of 402025550 in words is "four hundred two million, twenty-five thousand, five hundred fifty".