1252415450402 has 4 divisors (see below), whose sum is σ = 1878623175606. Its totient is φ = 626207725200.

The previous prime is 1252415450381. The next prime is 1252415450417. The reversal of 1252415450402 is 2040545142521.

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

It can be written as a sum of positive squares in only one way, i.e., 1109228133601 + 143187316801 = 1053199^2 + 378401^2 .

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 313103862599 + ... + 313103862602.

Almost surely, 2^{1252415450402} is an apocalyptic number.

1252415450402 is a deficient number, since it is larger than the sum of its proper divisors (626207725204).

1252415450402 is an equidigital number, since it uses as much as digits as its factorization.

1252415450402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 626207725203.

The product of its (nonzero) digits is 64000, while the sum is 35.

The spelling of 1252415450402 in words is "one trillion, two hundred fifty-two billion, four hundred fifteen million, four hundred fifty thousand, four hundred two".