7425621240 has 32 divisors (see below), whose sum is σ = 22276864080. Its totient is φ = 1980165632.

The previous prime is 7425621223. The next prime is 7425621241. The reversal of 7425621240 is 421265247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7425621241) 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, 30939969 + ... + 30940208.

Almost surely, 2^7425621240 is an apocalyptic number.

It is an amenable number.

7425621240 is an abundant number, since it is smaller than the sum of its proper divisors (14851242840).

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

7425621240 is a wasteful number, since it uses less digits than its factorization.

7425621240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61880191 (or 61880187 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 33.

The square root of 7425621240 is about 86172.0444227709. The cubic root of 7425621240 is about 1950.9415781490.

Adding to 7425621240 its reverse (421265247), we get a palindrome (7846886487).

The spelling of 7425621240 in words is "seven billion, four hundred twenty-five million, six hundred twenty-one thousand, two hundred forty".