1525402470406 has 4 divisors (see below), whose sum is σ = 2288103705612. Its totient is φ = 762701235202.

The previous prime is 1525402470379. The next prime is 1525402470413. The reversal of 1525402470406 is 6040742045251.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 381350617600 + ... + 381350617603.

It is an arithmetic number, because the mean of its divisors is an integer number (572025926403).

Almost surely, 2^{1525402470406} is an apocalyptic number.

1525402470406 is a deficient number, since it is larger than the sum of its proper divisors (762701235206).

1525402470406 is an equidigital number, since it uses as much as digits as its factorization.

1525402470406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 762701235205.

The product of its (nonzero) digits is 268800, while the sum is 40.

The spelling of 1525402470406 in words is "one trillion, five hundred twenty-five billion, four hundred two million, four hundred seventy thousand, four hundred six".