925781249 has 4 divisors (see below), whose sum is σ = 926802864.
Its totient is φ = 924759636.
The previous prime is 925781243. The next prime is 925781281. The reversal of 925781249 is 942187529.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is a trimorphic number since its cube, 793460187724960329925781249, ends in 925781249.
It is a de Polignac number, because none of the positive numbers 2k-925781249 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (925781243) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509447 + ... + 511260.
It is an arithmetic number, because the mean of its divisors is an integer number (231700716).
Almost surely, 2925781249 is an apocalyptic number.
It is an amenable number.
925781249 is a deficient number, since it is larger than the sum of its proper divisors (1021615).
925781249 is a wasteful number, since it uses less digits than its factorization.
925781249 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 1021614.
The product of its digits is 362880, while the sum is 47.
The square root of 925781249 is about 30426.6535951623.
The cubic root of 925781249 is about 974.6218122123.
The spelling of 925781249 in words is "nine hundred twenty-five million, seven hundred eighty-one thousand, two hundred forty-nine".