1525431131057 has 4 divisors (see below), whose sum is σ = 1605716980080. Its totient is φ = 1445145282036.

The previous prime is 1525431131053. The next prime is 1525431131083. The reversal of 1525431131057 is 7501311345251.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1525431131057 - 2² = 1525431131053 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1525431131057.

It is not an unprimeable number, because it can be changed into a prime (1525431131053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40142924483 + ... + 40142924520.

It is an arithmetic number, because the mean of its divisors is an integer number (401429245020).

Almost surely, 2^{1525431131057} is an apocalyptic number.

It is an amenable number.

1525431131057 is a deficient number, since it is larger than the sum of its proper divisors (80285849023).

1525431131057 is an equidigital number, since it uses as much as digits as its factorization.

1525431131057 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80285849022.

The product of its (nonzero) digits is 63000, while the sum is 38.

The spelling of 1525431131057 in words is "one trillion, five hundred twenty-five billion, four hundred thirty-one million, one hundred thirty-one thousand, fifty-seven".