1425457388 has 12 divisors (see below), whose sum is σ = 2497913040. Its totient is φ = 711767952.

The previous prime is 1425457381. The next prime is 1425457399. The reversal of 1425457388 is 8837545241.

It is not an unprimeable number, because it can be changed into a prime (1425457381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 236843 + ... + 242786.

It is an arithmetic number, because the mean of its divisors is an integer number (208159420).

Almost surely, 2^1425457388 is an apocalyptic number.

It is an amenable number.

1425457388 is a deficient number, since it is larger than the sum of its proper divisors (1072455652).

1425457388 is a wasteful number, since it uses less digits than its factorization.

1425457388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 480376 (or 480374 counting only the distinct ones).

The product of its digits is 1075200, while the sum is 47.

The square root of 1425457388 is about 37755.2299423537. The cubic root of 1425457388 is about 1125.4289427354.

The spelling of 1425457388 in words is "one billion, four hundred twenty-five million, four hundred fifty-seven thousand, three hundred eighty-eight".