625105261 has 8 divisors (see below), whose sum is σ = 688686048. Its totient is φ = 562650000.

The previous prime is 625105259. The next prime is 625105279. The reversal of 625105261 is 162501526.

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

It is not a de Polignac number, because 625105261 - 2¹ = 625105259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (625105361) 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, 280215 + ... + 282436.

It is an arithmetic number, because the mean of its divisors is an integer number (86085756).

Almost surely, 2^625105261 is an apocalyptic number.

It is an amenable number.

625105261 is a deficient number, since it is larger than the sum of its proper divisors (63580787).

625105261 is a wasteful number, since it uses less digits than its factorization.

625105261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 562763.

The product of its (nonzero) digits is 3600, while the sum is 28.

The square root of 625105261 is about 25002.1051313684. The cubic root of 625105261 is about 855.0359689848.

Adding to 625105261 its reverse (162501526), we get a palindrome (787606787).

The spelling of 625105261 in words is "six hundred twenty-five million, one hundred five thousand, two hundred sixty-one".