1428890825557 has 32 divisors (see below), whose sum is σ = 1672912644480. Its totient is φ = 1210259232000.

The previous prime is 1428890825533. The next prime is 1428890825569. The reversal of 1428890825557 is 7555280988241.

It is a de Polignac number, because none of the positive numbers 2^k-1428890825557 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1428890825507) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 591319 + ... + 1790932.

It is an arithmetic number, because the mean of its divisors is an integer number (52278520140).

Almost surely, 2^{1428890825557} is an apocalyptic number.

It is an amenable number.

1428890825557 is a deficient number, since it is larger than the sum of its proper divisors (244021818923).

1428890825557 is a wasteful number, since it uses less digits than its factorization.

1428890825557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2382373.

The product of its (nonzero) digits is 64512000, while the sum is 64.

The spelling of 1428890825557 in words is "one trillion, four hundred twenty-eight billion, eight hundred ninety million, eight hundred twenty-five thousand, five hundred fifty-seven".