1425640545771 has 32 divisors (see below), whose sum is σ = 2107531168512. Its totient is φ = 851657224320.

The previous prime is 1425640545733. The next prime is 1425640545851. The reversal of 1425640545771 is 1775450465241.

It is a happy number.

It is not a de Polignac number, because 1425640545771 - 2³⁴ = 1408460676587 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1425640545701) 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, 2334360 + ... + 2881061.

It is an arithmetic number, because the mean of its divisors is an integer number (65860349016).

Almost surely, 2^{1425640545771} is an apocalyptic number.

1425640545771 is a deficient number, since it is larger than the sum of its proper divisors (681890622741).

1425640545771 is a wasteful number, since it uses less digits than its factorization.

1425640545771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5215643.

The product of its (nonzero) digits is 4704000, while the sum is 51.

The spelling of 1425640545771 in words is "one trillion, four hundred twenty-five billion, six hundred forty million, five hundred forty-five thousand, seven hundred seventy-one".