259925642 has 8 divisors (see below), whose sum is σ = 394824000. Its totient is φ = 128317644.

The previous prime is 259925639. The next prime is 259925663. The reversal of 259925642 is 246529952.

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

It is a super-2 number, since 2×259925642² = 135122678738224328, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 259925593 and 259925602.

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, 822392 + ... + 822707.

It is an arithmetic number, because the mean of its divisors is an integer number (49353000).

Almost surely, 2^259925642 is an apocalyptic number.

259925642 is a deficient number, since it is larger than the sum of its proper divisors (134898358).

259925642 is a wasteful number, since it uses less digits than its factorization.

259925642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1645180.

The product of its digits is 388800, while the sum is 44.

The square root of 259925642 is about 16122.2095880186. The cubic root of 259925642 is about 638.1895791802.

The spelling of 259925642 in words is "two hundred fifty-nine million, nine hundred twenty-five thousand, six hundred forty-two".