265625001551 has 12 divisors (see below), whose sum is σ = 332760991752. Its totient is φ = 210164835888.

The previous prime is 265625001539. The next prime is 265625001557. The reversal of 265625001551 is 155100526562.

It is a de Polignac number, because none of the positive numbers 2^k-265625001551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (265625001557) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 208496225 + ... + 208497498.

It is an arithmetic number, because the mean of its divisors is an integer number (27730082646).

Almost surely, 2^265625001551 is an apocalyptic number.

265625001551 is a deficient number, since it is larger than the sum of its proper divisors (67135990201).

265625001551 is a wasteful number, since it uses less digits than its factorization.

265625001551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 416993750 (or 416993743 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 38.

The spelling of 265625001551 in words is "two hundred sixty-five billion, six hundred twenty-five million, one thousand, five hundred fifty-one".