1425657642 has 16 divisors (see below), whose sum is σ = 2862412992. Its totient is φ = 473369600.

The previous prime is 1425657641. The next prime is 1425657643. The reversal of 1425657642 is 2467565241.

It is an interprime number because it is at equal distance from previous prime (1425657641) and next prime (1425657643).

It is a junction number, because it is equal to n+sod(n) for n = 1425657594 and 1425657603.

It is not an unprimeable number, because it can be changed into a prime (1425657641) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460734 + ... + 463817.

It is an arithmetic number, because the mean of its divisors is an integer number (178900812).

Almost surely, 2^1425657642 is an apocalyptic number.

1425657642 is an abundant number, since it is smaller than the sum of its proper divisors (1436755350).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1425657642 is a wasteful number, since it uses less digits than its factorization.

1425657642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 924813.

The product of its digits is 403200, while the sum is 42.

The square root of 1425657642 is about 37757.8818526675. The cubic root of 1425657642 is about 1125.4816418659.

The spelling of 1425657642 in words is "one billion, four hundred twenty-five million, six hundred fifty-seven thousand, six hundred forty-two".