1425145144 has 48 divisors (see below), whose sum is σ = 2857158720. Its totient is φ = 665710080.

The previous prime is 1425145133. The next prime is 1425145147. The reversal of 1425145144 is 4415415241.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1425145147) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 205152 + ... + 211984.

It is an arithmetic number, because the mean of its divisors is an integer number (59524140).

Almost surely, 2^1425145144 is an apocalyptic number.

It is an amenable number.

1425145144 is an abundant number, since it is smaller than the sum of its proper divisors (1432013576).

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

1425145144 is a wasteful number, since it uses less digits than its factorization.

1425145144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6928 (or 6895 counting only the distinct ones).

The product of its digits is 12800, while the sum is 31.

The square root of 1425145144 is about 37751.0946066468. The cubic root of 1425145144 is about 1125.3467623070.

It can be divided in two parts, 14251 and 45144, that added together give a palindrome (59395).

The spelling of 1425145144 in words is "one billion, four hundred twenty-five million, one hundred forty-five thousand, one hundred forty-four".