2625406642 has 8 divisors (see below), whose sum is σ = 3950773632. Its totient is φ = 1308482100.

The previous prime is 2625406621. The next prime is 2625406657. The reversal of 2625406642 is 2466045262.

2625406642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 2109834 + ... + 2111077.

It is an arithmetic number, because the mean of its divisors is an integer number (493846704).

Almost surely, 2^2625406642 is an apocalyptic number.

2625406642 is a deficient number, since it is larger than the sum of its proper divisors (1325366990).

2625406642 is a wasteful number, since it uses less digits than its factorization.

2625406642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4221224.

The product of its (nonzero) digits is 138240, while the sum is 37.

The square root of 2625406642 is about 51238.7220956963. The cubic root of 2625406642 is about 1379.5333159060.

The spelling of 2625406642 in words is "two billion, six hundred twenty-five million, four hundred six thousand, six hundred forty-two".