1425173720 has 16 divisors (see below), whose sum is σ = 3206640960. Its totient is φ = 570069472.

The previous prime is 1425173719. The next prime is 1425173749. The reversal of 1425173720 is 273715241.

It is a super-2 number, since 2×1425173720² = 4062240264357276800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17814632 + ... + 17814711.

It is an arithmetic number, because the mean of its divisors is an integer number (200415060).

Almost surely, 2^1425173720 is an apocalyptic number.

1425173720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1425173720 is an abundant number, since it is smaller than the sum of its proper divisors (1781467240).

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

1425173720 is a wasteful number, since it uses less digits than its factorization.

1425173720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35629354 (or 35629350 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 1425173720 is about 37751.4730838414. The cubic root of 1425173720 is about 1125.3542838086.

Adding to 1425173720 its reverse (273715241), we get a palindrome (1698888961).

The spelling of 1425173720 in words is "one billion, four hundred twenty-five million, one hundred seventy-three thousand, seven hundred twenty".