1240651425 has 48 divisors (see below), whose sum is σ = 2239384448. Its totient is φ = 602380800.

The previous prime is 1240651421. The next prime is 1240651427. The reversal of 1240651425 is 5241560421.

It is not a de Polignac number, because 1240651425 - 2² = 1240651421 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1240651392 and 1240651401.

It is not an unprimeable number, because it can be changed into a prime (1240651421) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 62460 + ... + 79890.

Almost surely, 2^1240651425 is an apocalyptic number.

1240651425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1240651425 is a deficient number, since it is larger than the sum of its proper divisors (998733023).

1240651425 is a wasteful number, since it uses less digits than its factorization.

1240651425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17530 (or 17525 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 1240651425 is about 35222.8821222795. The cubic root of 1240651425 is about 1074.5251697816.

The spelling of 1240651425 in words is "one billion, two hundred forty million, six hundred fifty-one thousand, four hundred twenty-five".